Synovial sarcoma (SS) is a malignant tumor comprising 5-10% of all soft tissue sarcomas. SS has distinct characteristics, such as a predilection for young adults and relatively slow growth compared to other soft tissue sarcomas. Some patients with SS experience long-standing pain at the tumor site before the development of a palpable mass. Herein, we report the case of a 39-year-old woman with SS in the upper arm who presented with pain for > 20 years. The tumor detected on magnetic resonance imaging at 17 years was an SS. To the best of our knowledge, no English-language reports on imaging study-based identification of SS, which was undiagnosed for > 20 years, are known in the literature. This report discusses the imaging features of this latent lesion and the volume-doubling time of this unusual tumor.

Currently, coronavirus disease 2019 (COVID-19) and tuberculosis (TB) are among the most important causes of respiratory infections around the world. Both of them are sources of concern for human health and life safety. COVID-19 caused the deaths of millions of people, and many of them suffered from what has become known as \'post-COVID squeal\'. Immunosuppression is one of the most important of these symptoms that leave patients susceptible to severe infections like TB.
UNASSIGNED: In these two cases, the authors observed the development of active TB after a period of COVID recovery. Two patients who were admitted to the hospital complained mainly, among other symptoms, of fever and a continuous cough after a period of COVID-19 recovery.
UNASSIGNED: Radiological examination revealed a caving density in the two cases, and the Gene-Xpert test proved the presence of Mycobacterium tuberculosis bacteria despite the negative result of the Ziehl-Neelsen stain. The two patients were improved after standard TB treatment.
UNASSIGNED: Patients with post-COVID-19 chronic respiratory symptoms should be screened for TB, especially in TB-endemic areas, even though the result of the Ziehl-Neelsen stain was negative.

In latent Wolff-Parkinson-White syndrome, ventricular pre-excitation is inapparent during sinus rhythm but carries the same possibility of sudden cardiac death and palpitations as overt Wolff-Parkinson-White syndrome. It is difficult to diagnose latent Wolff-Parkinson-White syndrome when a patient does not have syncope or palpitations. We report the case of an asymptomatic patient with latent Wolff-Parkinson-White syndrome detected on school heart screening using subtle electrocardiography findings.

BACKGROUND: Cryptococcus is one of the major fungal pathogens infecting the lungs. Pulmonary cryptococcal infection is generally considered a community-acquired condition caused by inhalation of dust contaminated with fungal cells from the environment. Here, we report a case developing pulmonary cryptococcosis 3 months after hospital admission, which has rarely been reported before.
METHODS: A 73-year-old female patient who was previously immunocompetent experienced persistent dry cough for 2 weeks, 3 months after admission. Chest computed tomography (CT) showed a new solitary pulmonary nodule developed in the upper lobe of the left lung. Staining and culture of expectorated sputum smears were negative for bacteria, acid-fast bacilli, or fungus. The patient then underwent biopsy of the lesion. Histopathology findings and a positive serum cryptococcal antigen titer (1:8) indicated pulmonary cryptococcosis. Daily intravenous 400 mg fluconazole was administered initially followed by oral fluconazole therapy. Follow-up chest CT after 3 months of antifungal therapy showed complete disappearance of the pulmonary nodule. Respiratory symptoms of the patient also resolved. A complete investigation excluded the possibility of a patient-to-patient transmission or primarily acquiring the infection from the hospital environment. Based on the patient\'s history of exposure to pigeons before admission and recent steroid and azathioprine use after admission for the treatment of myasthenic crisis, reactivation of a latent pulmonary cryptococcal infection acquired before admission, in this case, is impressed.
CONCLUSIONS: Although rarely reported, pulmonary cryptococcal infection should be included in the differential diagnosis of hospitalized patients with respiratory symptoms, especially in those with predisposing risk factors. Chest image studies and further surgical biopsy are needed for confirmation.

Ever changing technology is allowing law enforcement/crime laboratories the ability to use new advances to solve old cases. Exonerations through advances in DNA testing have become increasingly common. However, other forensic disciplines are also utilizing new technologies, which are providing investigative leads and case closures. One advancement is the Federal Bureau of Investigation\'s Next Generation Identification (NGI) biometric system, which has enhanced the field of print identification. The Oklahoma State Bureau of Investigation (OSBI) Latent Evidence Unit is utilizing NGI to assist in solving \"Cold Cases.\" While the OSBI cold case project has been successful, reviewing old evidence and case files, while keeping up with current casework, can be challenging. However, the recognition and application of such powerful technology is warranted, as demonstrated by the success that has been achieved.

Eddy covariance (EC) continues to provide invaluable insights into the dynamics of Earth\'s surface processes. However, despite its many strengths, spatial replication of EC at the ecosystem scale is rare. High equipment costs are likely to be partially responsible. This contributes to the low sampling, and even lower replication, of ecoregions in Africa, Oceania (excluding Australia) and South America. The level of replication matters as it directly affects statistical power. While the ergodicity of turbulence and temporal replication allow an EC tower to provide statistically robust flux estimates for its footprint, these principles do not extend to larger ecosystem scales. Despite the challenge of spatially replicating EC, it is clearly of interest to be able to use EC to provide statistically robust flux estimates for larger areas. We ask: How much spatial replication of EC is required for statistical confidence in our flux estimates of an ecosystem? We provide the reader with tools to estimate the number of EC towers needed to achieve a given statistical power. We show that for a typical ecosystem, around four EC towers are needed to have 95% statistical confidence that the annual flux of an ecosystem is nonzero. Furthermore, if the true flux is small relative to instrument noise and spatial variability, the number of towers needed can rise dramatically. We discuss approaches for improving statistical power and describe one solution: an inexpensive EC system that could help by making spatial replication more affordable. However, we note that diverting limited resources from other key measurements in order to allow spatial replication may not be optimal, and a balance needs to be struck. While individual EC towers are well suited to providing fluxes from the flux footprint, we emphasize that spatial replication is essential for statistically robust fluxes if a wider ecosystem is being studied.

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